To set listener security properties

Check the Enabled box in the Security field to enable security
for this listener. When this option is selected, you must select SSL3 or TLS
to specify which type of security is enabled, and you must enter a certificate
nickname.

Check the Enabled box in the Client Authentication field if clients
are to authenticate themselves to the Application Server when using this listener.

Enter the keystore alias in the Certificate Nickname field if
the Enabled box is checked. The keystore alias is a single value that identifies
an existing server key pair and certificate. The certificate nickname for
the default keystore is s1as.